Excerpt of wechat payment refund exception

Wechat payment refund API address: https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=9_4&index=6

Precautions:

Total fee: must be the payment amount of the order, unit: minute;
Refund fee: less than the order payment amount, unit: minute;
Multiple refunds can be initiated for the same order, and the out \;
Use a merchant refund No. for refund. If the refund fails for some reason, it will not affect the use of other merchant refund No. for refund next time.

Some error messages

The total amount in the refund is inconsistent with the total amount of wechat payment order

Refund request

 <xml>
  <sign>464fd80d3822f288396c321501a06c29</sign>
  <refund_fee>21500</refund_fee>
  <mch_id>123</mch_id>
  <op_user_id>1232846202</op_user_id>
  <total_fee>21500</total_fee> --This must be the total price at the time of payment, especially when refunding in batches
  <appid>123123123123</appid>
  <out_refund_no>20160601195633930</out_refund_no>
  <out_trade_no>2016053017063826030</out_trade_no>
  <nonce_str>nNlsPAcmpP</nonce_str>
</xml>  

Refund response

<xml>
<return_code><![CDATA[SUCCESS]]></return_code>
<return_msg><![CDATA[OK]]></return_msg>
<appid><![CDATA[123123123123]]></appid>
<mch_id><![CDATA[123]]></mch_id>
<nonce_str><![CDATA[F8bnSKUY7qvEpQtk]]></nonce_str>
<sign><![CDATA[908963603B666ECB7FC0F0AE1C1F22EA]]></sign>
<result_code><![CDATA[FAIL]]></result_code>
<err_code><![CDATA[REFUND_FEE_MISMATCH]]></err_code>
<err_code_des><![CDATA[The same out_refund_no Refund amount should be consistent]]></err_code_des>
</xml>

Refund fee is greater than total fee

<xml><return_code><![CDATA[FAIL]]></return_code>  
<return_msg><![CDATA[invalid refund_fee]]></return_msg>  
</xml>

The payment amount of the order has been fully refunded

<xml><return_code><![CDATA[SUCCESS]]></return_code>
<return_msg><![CDATA[OK]]></return_msg>
<appid><![CDATA[123123123123]]></appid>
<mch_id><![CDATA[123]]></mch_id>
<nonce_str><![CDATA[UdhYGRO1wLNkR0TR]]></nonce_str>
<sign><![CDATA[3FD2B2A28ECF24565CA35FCB76149431]]></sign>
<result_code><![CDATA[FAIL]]></result_code>
<err_code><![CDATA[TRADE_STATE_ERROR]]></err_code>
<err_code_des><![CDATA[Order status error]]></err_code_des>
</xml>

Lack of certificate

wx sendpost exception  
org.apache.http.NoHttpResponseException: api.mch.weixin.qq.com:443 failed to respond

Reference resources: http://blog.csdn.net/u011160656/article/details/41946873

https://blog.csdn.net/luojinbai/article/details/50921507

Keywords: xml PHP less Apache

Added by Daguse on Mon, 06 Jan 2020 21:58:48 +0200

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Excerpt of wechat payment refund exception

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